The improved 3-step preparation of a key antitumor agent, 7-ethyl-10-hydroxycamptothecin(SN-38), which consists of ethylation, oxidation and photo-chemical rear
A new monometallic complex [Co(phen)2tpphz]3+ (where tpphz is tetrapyrido [3,2-a: 2',3'-c: 3″,2″-h: 2'″,3'″-j] phenazine) was synthesized by